/*灰色系*/
.metro{width: 1000px; height: 520px; background: #DEDEDE; padding: 10px 0;}
.m_i_1{background: #1BA1E2;}
.m_i_2{background: #8CBF26;}
.m_i_3{background: #996600;}
.m_i_4{background: #3C5B9B;}
.m_i_5{background: #339933;}
.m_i_6{background: #D5658E;}
.m_i_7{background: #F09609;}
.m_i_8{background: #5E5E5E;}

/*小清新*/
.metro{width: 1000px; height: 520px; background: #F3F3F3; padding: 10px 0;}
.m_i_1{background: #22BA9B;}
.m_i_2{background: #666981;}
.m_i_3{background: #68CAB6;}
.m_i_4{background: #FBB168;}
.m_i_5{background: #E17695;}
.m_i_6{background: #A285C5;}
.m_i_7{background: #8AA800;}
.m_i_8{background: #E7C311;}